Is y'alls collective memory so short? Copilot just a few years ago was auto complete on steroids that was entirely first party and trained by GH on users' code.
OpenAI did train the model on GitHub repos. The next question is whether this was enabled by Microsoft's investment in / partnership with OpenAI. I suspect yes, but I haven't gone searching for this yet.
It used OpenAI's Codex model (see: https://en.wikipedia.org/wiki/GitHub_Copilot?wprov=sfla1)
OpenAI did train the model on GitHub repos. The next question is whether this was enabled by Microsoft's investment in / partnership with OpenAI. I suspect yes, but I haven't gone searching for this yet.